Siphon recorder



L. CHAUVEAU May 2, 1950 SIPHON RECORDER 5 Sheets-Sheet l Filed Aug. 9a 1946 lOmFOmJm xoOJm zOPQZ L. CHAUVEAU SIPHON RECORDER l May 2, 1950 5 Sheets-Sheet 2 Filed Aug. 9, 1946 Morne/.s

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SIPHON RECORDER Filed Aug. 9, 1946 5 Sheets-Sheet 4 CARRIER SPOOL May 2, i950 l.. CHAUVEAU 2,506,136

I sIPHoN RECORDER Filed Aug. 9, 1946 5 SheehS-SeetI 5 /0 MOVABLE COIL Patented May 2, 1950 SIBHON RECORDER Louis Chauveau, lParis, France, assignor to iSo-i cietefFrancaise Radio-Electrique, a corporation `ApplicationAugust .9, 1946, SerialNo. 689,603 In Erance AJanuary 16, Y'194.1

Section'LPublicLaw 690, AAugust '8,1946 Patent .expires J anuarylG, :19.61

.i3 Claims.

.'Ifhe presentzinvention relates -.to the .constructiontoffaMorsefsignalrecordlng apparatusfof Ythe syphon `recorder'ftaype which is .capable t.of ensur ling high speed tcommunications Iof 'the .order -of i360 wordsper inute.

.Theiinvention covers smore particularly ycertain devicesiandsarrangements designated for obtainfing this :speed .and A.for `simplifying the .manipulations'ltozbefeffected:byatheioperator.

A`'One :embodiment of fthe apparatus Yis given :hereinafter .by lway .of :a :non-.limitative .example @accompanying `this :description `.are ydrawings which show in:

Figure .l-A fgeneralfsarrangementof the .uncludater.

. Figure rZ-IIYhe group encontrolelectromagnets.

FigureB--Themovingmechanism.

Figures' efand -.Therecordingbloch yFigures .6 fand 7--.The itape-icarrier vspool.

:Figure f-.Thefmoving coupling.

Figure 9-A diagram of the driving motoi-.control circuit.

The undulatoressentiallycomprises (Figure 1) the :group of.controlelectromagnets .I,..the mov- .able `system `.2, .the recording block the tape- .cam'ier '.spools 4, 4.the ink .container .5, the -whole arrangement -being `mounted Aon la base 46. The .tape .is driven by. means .of =.the-motor1.at aspeed suitable .for .dealing .with .the signals.

' The group -of .control Velectrornagnets .'(Ijigure 2) comprises .the .two :stationary .field .coils .il .and 4l" and .the `two. moving .coils lil .and .l l, lthesignal .current .flowing 'through .these .latter .coils which .operate :on .anlinverted "rf-.shaped .lever .IL

` Each of the eld coils comprises a, core l2, a lgyolse I3, and facasing 1.4, .these three ,parts .being magnetic. JA .winding l5.is wound .onthecore 12.;

This assembly forms .a .double .electro-.dynamic 'system -which is 'adaptable to the following "combination's:

"The lwindin'gs of "the stationary coils can I'be "coupled llnseries or inlparallel .according 'to fthe `voltage o'f'the'sup'ply system. 'The circuit of each "of 'said windings may include Aa resistance ena- *"bling I"the `effect 'of the windings "on the system *to'be' adjusted.

The windings of the moving Ecoils A.may 'be leitherfindenendent,A orffconnected -ln series `or in 2 parallel. When thefsignal current .fis in thefform .of a two-batteryfreversed current,it is fed to both l.coils yin'such amanner that one of them moves upwards when the other imoves downwards, and conversely. FOriagainzthe signal curr-.ent mayfbe in the .form Y.of -a one-battery reversed zcurrent, one of .the .coils -being fsupplied v`.with the operat- :ing .current and `the other with the .inoperative current, .and 'the directions .of movement .being preserved. Resistances may 'be .connectedfin the .circuit `of :each .coil .ato `:enable :the effect thereof to beadjusted .atv/ill. When .the signalcurrent is in the form of one-way or ysimple .current f(operative -icurrent :only .it maybe fed .to .both

:coils ain `such a .manner Vthat the directions of .the .art and v.donut Aconstitutea .feature .of the invention.

The stationary eld coils ifand 9 .mayeach .be treplaced by .wa permanent .magnet which is .suitably-adjustedtmproduce.thelsaniemagneticeld; ;in.this case, the. assembly .will form .a double magnetic-dynamic system, .the .operation .of .which y.will v.be ...identical with ...that previously described.

.The .moving .system (Figure .3) .comprises .the Ainverted fl-'eshaped lever il, .the .stylus -holder '[8 Land .its .stylus .23, .together .with the .adjustable stop 1:9, @the `whole .arrangement v.being .mounted on a plate 2G which is itself suitably xed .to the .upper ,part .of the .stationary .coils .and 9.

The stylusholder vlliconsists.o`f..a tube-2l which .passes .through .the .cylindrical part 22, .as .shown in the'. drawing; -thestylus .23 {isxed to .thejfree fend .of .the tube. .A iaw L24 is .iixed to the other end; said jaw engages the end oi the control part wofthe inverted Teshaped lever .I l.

The .cylindrical ,parti 2 Lis .extended at its .upper .end to .form a .spherical v i:ucoiection .er .nipple on to which the rubber ink feed tube v'25 is `tte`d. "The spherical proj ection, 'the cylinder and the .tube are, provided Withisuitable'holes to allow .the ink toflow towards' the stylus.

The cylindrical part i"22 is *'xed to -the `top Vci. a small spindle'ZB-carried by a :frame'Z'L wherein `the base Lof "said lspindle :rests on a stool ball1f28.

The balanced inverted Tshapedllever :Fl can swivel about the pivot 29 by the action of the moving coils, as shown in Figure 2; it thus moves the stylus holder about its vertical spindle 26 in such la manner that the stylus records the signal on the tape 45 as shown in Figure 3.

The stylus holder I8 is also perfectly balanced, the weights distributed relatively to the axis being the same on the stylus end as on the jaw end. The assembly thus forms a very sensitive aperiodic system, capable of a highspeed of movement foralow applied power.

In apparatus of this kind, according to the speeds of reception and the preference of the operators, it is necessary to have a means of adjusting the height of the signal recorded (dimension H, Figure 3). For this purpose, the tube 2l passes through a fork member 39 mounted on a spindle 36; said spindle is rotatable in the saddle 3l a spring 32 is provided to give tension `to this movement. The fork can 'thus be moved by hand along the tube 2l andraccording to Whether said fork is more or less remote'from the axis of rotation 26, the amplitude of recording of the signals is more or less short.

yThe saddle 3l itself issecured to sliding carriage 33 which can move, in the transverse di rection, on a guideway 34; this movement is controlled by the knob 35. It enables the moving system to be centred or to assist the operative or non-operative positions.

This adjustable stopassembly is particularly practical and enables the adjustment to be effected very quickly. y

Diierent connections can be used between the moving coils and the ends of the horizontal ar of the inverted T-shaped lever.

In one embodiment shown'in Figure 2, each moving coil carries a hard metal stud 36 which is adapted to strike against a hemispherical stud 31 likewise made of hard metal, said hemispherical studs being iixecl to the ends of the horizontal arm. The coils are thus independent of the lever on which they act by impact.

In another embodiment (Figure 8) the above device is completed for each moving coil by a resilient connection between the lever andthe coil; said connection comprises for instance a rubber strip 38 which is xed tothe coil and passes over the arm of the lever I1. A

This rubber connection may be replaced by any similar mechanical device (helical or leaf spring). Great flexibility of operation is thus obtained duringrapid communications.

VIn the apparatus in question, it is necessary t'o effect three operations at the time of starting, viz: placing the tape under the stylus, starting the motor and opening the ink supply cock, the three converse opera-tions being effected when stopping. Y.

The recording block of the present invention enables these three operations to be combined in a single operation, both when starting and when stopping. For this purpose, the block is constructed in the following manner (Figures 4 and An inverted L-shaped member 40 is adapted to slide vertically along the support 4l on which it is held by the strap members'42 and 43. A small pulley 44, over which passes the paper tape 45, is fixed to the end of the part 40.

The part 40 is moved upwardly by v springs 46 acting on cross-member 46. An adjusting screw 41 with a locking screw 48 limits the travel at will and consequently limits the pressure of the peper against the stylus.

The spindle 50 furthermorecarries an eccentric pin 52 which can move in the opening 49 and return the part 4U to its lowest position.

The whole arrangement thus forms a locking means the bolt of which is formed by the part 40. By turning the knob B in one direction the lock is closed in order to make the assembly operative; by turning in the reverse direction, the assembly is made inoperative.

For the control of the ink container and of the starting switch for the motor, a hub 53 (Figure 5) is adapted to rotate about the spindle 54 fixed to the rear of the support 4l.

The hub 53 carries three fork members 55, 56 and 51. The eccentric pin 52 passes through the fork 55; it follows that by operating thev control knob B the hub 53, and consequently the forks, are caused to rotate in one direction or the other. The fork 56 acts on the button of the switch 58 so as to close or open it and thus start or stop the motor-driving the tape 45, said switch also controlling the supply to the stationary coils.

The fork 51 acts through the intermediary of a small crank 59 on the plug of the ink cock 60, said cock'being connected, on the one hand to the ink container 5 (Figure l) and on the other'hand to the stylus holder I8 through the intermediary of the rubber tube 25.

It" will thus be seen that it is only necessary to turn the control knob in one direction in order to obtain simultaneously the positioning of the paper under the stylus, the starting of the motor and the opening of the inkcock. By turning in the reverse direction the whole arrangement is made inoperative. One-knob control is thus obtained.

Owing to the speed of the communications, it is essential for it to be possible to replace quickly the paper tape which has been completely printed. To this end, the apparatus is provided (Figures 6 and 7) with two tape carrier spools 4 and 6l located on the base in full view of the operator. Each spool comprises a knife-shaped metal blade 62 on which is xed a spindle 63 the inner cheek 64 of the spool and its hub are adapted to rotate loosely about said spindle on which they are held by the screw 65. The outer cheek 65 of the spool is `centred on the hub of the inner-cheek tlrough the intermediary of three resilient pins It will thus be seen` that the loading of a spool can be very quickly eiected; it is only necessary to remove the outer cheek, place the roll of tape on the inner cheek and re-mount the outer cheek.

The support for the two spools comprises two metal parts 68 and 69 provided with grooves into which lthe blades 62 are adapted to t like a knife in .its sheath.

The feed of the paper (Figure 1) has been care'- fully designed so that the tape in use can be readily placed in position and so that the' second tape can be prepared for quick insertion under the stylus aftery the printing of the rst tape has been completed; As it comes out of the spool, the tape slides on the suitably rounded edge 1G of the base 6,'is thenv guided by the intermediate rollers 1I and 12 before passing over the pulley 44 and thence between the friction drive-,device 13, 14 driven by the motor 1.

Y An apparatus .0f ,the ,kind in question Shuld, he

atmet capable of vreceiving communications at variable speed, from manual manipulation of the order of words per minute to high speed of 360 words per minute. For all this range of speeds, the length of the recording of a given word remains the same. The driving motor for the tape should therefore have a range of speed of theratio or 1 to 15 (for instance 60G-9G00 reVs. per minute). A direct current motor can operate in these conditions provided that an armature rheostat and a field rheostat `are inserted in its circuits. In order to simplify the control, one and the same rheostat may be used for both purposes by changing the connections thereof by means of a, changeover switch.

In the apparatus according to the invention, an arrangement of this kind comprising certain special and novel features (Figure 9) is used in order to simplify the manipulation by the operator.

The shunt or compound type motor comprises an armature 85 and a field winding 8l which are connected on the one hand to one pole of the source of current and on the other hand and respectively to each of the ends of the resistance 32. Said resistance can be adjusted by the change-over switch 83, the contact arm 8f4 of which moves at will over the studs a and n.

The other pole of the source, the connection of which is controlled by the switch 58 of the recording block, is connected by the reversing switch 'I5 either t0 the input end E or to the output end S of the rheostat 82.

Inspection of the diagram shows that in the first case, the resistance 82 is inserted in the circuit of the armature whereas in the second case it is inserted in the circuit of the field winding 8 I.

An additional stud p is provided at the end of the change-over switch 83 in such a manner that the arm dll can be placed either on the stud n only, or astride on the studs n and p.

The stud p is connected to the coil of an electro-magnetic relay 16; said relay controls the reversing switch 'l5 and is provided with a holding contact 17, the circuit of which can be broken by the push-button 78.

A connection 19 permanently connects the arm to the input end of the resistance 82.

This assembly operates as follows:

When starting, assuming that the arm 84 is on the stud a, the resistance 82 is completely inserted in the circuit of the armature 85, whereas the eld winding 8l is directly connected to the terminals of the supply system; the motor rotates at its lowest speed.

By moving the arm in the direction of the arrow F, the value of the resistance 82 is gradually decreased, the speed of the motor increases until, when the arm reaches the stud 1t, the motor rotates at its normal speed, the armature and the field then being supplied direct from the supply system. The variation of speed is thus obtained by means of the armature rheostat.

At this instant, if it is necessary further to increase the speed, it is only necessary for the operator to push the arm astride the studs n and p; the relay 'it operates and remains operative by means of its contact 'H and the push-button 18. The -ipole of the source is then connected by the reversing switch l5 to the output end S of the resistance B2. The resistance is switched into the iield winding circuit. Then, by gradually moving the arm in the opposite direction to the arrow, the resistance 82 is gradually inserted in this circuit 8 I, and the speed of the motor increases until,

DTI

6 as 'the arm again reaches the stud speed is obtained. A

It will thus be seen that by moving the arm Il in the direction of the arrow up to the extreme end position, then in the reverse direction-until it is returned to the extreme starting position, the motor is made to pass through al1 its successive speeds of operation. y

This arrangement has the following further advantages over the previously described arrangement: i

When in communication, it is often necessary, after receiving a high speed message, to return very quickly to low speed in order to receive a service indication transmitted at manual speed; in this case, using the diagram of Figure 9, it is only necessary to depress the button 18 in order to make the relay 16 inoperative, the resistance portion which, at high speed, was in the eld circuit is sharply switched into the armature circuit, whereby a sudden reduction of speed is produced.

On closing down, the switch 58 is opened and the relay 16 becomes inoperative; it follows that the arm 84 may be left in any vposition and that: when the device is used again, the motor will always start on the low speed range, thereby preventing the breakage of the tape due to starting at too high a speed.

The present description is given by way of a non-limitative indication; the various elements described may be used together or separately in the application contemplated or in all other applications of the same kind (various recorders).

In particular, the special diagram of the driving motor circuit can be used for any industrial arrangement in which it is required to obtain a wide range of speed variation of the motor with low speed starting.

The elements may be modified according to :requir-ements; thus, for instance, the inverted T- shaped lever ll' may be eliminated, the coils I0 and l I being laterally coupled direct to the stylus holder lo and the stationary coils 8 and 9 being suitably placed for this arrangement.

I claim:

l. Apparatus for receiving and recording telegraphic signals comprising in combination a rod pivotable about a vertical axis, a stylus mounted at one end of the rod and a hinge connection at the other end of the rod, an actuating lever operatively connected to the hinge connection having the shape of an inverted T the upper end of the vertical branch thereof being connected to said hinge connection, electromagnet actuating means associated with said lever and responsive to the telegraphic signals, a paper strip adapted to be fed past the stylus and in contact therewith, variable speed drive means for feeding the said strip of paper, a fork engaging either side of said rod, and mechanical means operative to displace said fork longitudinally of said rod.

2. Apparatus according to claim 1 wherein the electromagnet actuating means comprises two movable cylindrical coils each displaceable in a permanent radial magnetic field.

3. Apparatus according to claim l wherein the variable speed driving means comprises in combination a direct current motor having a shunt field winding, an armature, and a resistance connecting one terminal of the eld winding to one terminal of the armature, a series of taps connected to diiferent points of the resistance, a brush engaging each of the taps, an inverting relay having an energizing coil connected to one of Aa, the highest 7` id taps nd'an inverter connected on the one :I UNITED STATES PATENTS hand to one terminal of a, source of direct current Numb N Date Y and on the other hand to both ends of the re- 116248323 Cloken pn 12 1927 sistor, the energizing coil of the relay being series 2in-36909 Berdon Feb 18 1936 connected t0 a Push-hmmm Witch- 2;?'1'751869 Bernarda oct. 101 1939 2,176,777 Tate Oct. 17, 1939 LOUIS CHAUVEAU 2,232,082 spencer Feb. 1a, 1941 REFERENCES CITED FOREIGN PATENTS The following references are of record in the 10 Nuniber Country Date tile of this patent: 347,250 Great Britain Apr. 20, 1931'\ i 

